Year	current US$
1991	5544547114.024939
1992	5808059740.882917
1993	5639330350.409733
1994	7181296667.27372
1995	8175370156.928806
1996	8458623640.141792
1997	8929054054.054054
1998	8250153615.0747595
1999	7364160141.823016
2000	7872718416.000459
2001	8106952481.4001875
2002	8489922392.472354
2003	9043745688.66406
2004	10931806198.371315
2005	12589255922.589256
2006	14601478043.11977
2007	16876637903.483541
2008	19645579138.042995
2009	18477524732.753468
2010	22950134949.780983
2011	25921353618.241894
2012	29214213299.5853
2013	29837162677.065277
2014	28029153475.60658
2015	26170072656.439644
2016	25606936998.490696
2017	27369522599.07106
2018	29313853848.487328
2019	29340980188.320484
2020	24677955936.88134
2021	27311306581.482952
2022	30685383558.16844